package com.study.demo.provider;

import android.content.ContentProvider;
import android.content.ContentValues;
import android.database.Cursor;
import android.net.Uri;
import android.os.ParcelFileDescriptor;

import java.io.File;
import java.io.FileNotFoundException;

/**
 * Created by sll on 2016/6/16.
 */
public class LocalImageProvider extends ContentProvider {
  private static final String URI_PREFIX = "content://com.study.demo";

  public static String constructUri(String url) {
    Uri uri = Uri.parse(url);
    return uri.isAbsolute() ? url : URI_PREFIX + url;
  }

  @Override
  public ParcelFileDescriptor openFile(Uri uri, String mode)
      throws FileNotFoundException {
    File file = new File(uri.getPath());
    ParcelFileDescriptor parcel =
        ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY);
    return parcel;
  }

  @Override
  public boolean onCreate() {
    return true;
  }

  @Override
  public int delete(Uri uri, String s, String[] as) {
    throw new UnsupportedOperationException("Not supported by this provider");
  }

  @Override
  public String getType(Uri uri) {
    throw new UnsupportedOperationException("Not supported by this provider");
  }

  @Override
  public Uri insert(Uri uri, ContentValues contentvalues) {
    throw new UnsupportedOperationException("Not supported by this provider");
  }

  @Override
  public Cursor query(Uri uri, String[] as, String s, String[] as1, String s1) {
    throw new UnsupportedOperationException("Not supported by this provider");
  }

  @Override
  public int update(Uri uri, ContentValues contentvalues, String s, String[] as) {
    throw new UnsupportedOperationException("Not supported by this provider");
  }
}
